Home / 79,961.73-120,000.47-31,282.21

Finding the Fourth Proportional to 79,961.73, 120,000.47 and 31,282.21

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Solution

The fourth proportional to 79,961.73, 120,000.47 and 31,282.21 is: 46,945.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,961.73 : 120,000.47 = 31,282.21 : x
  2. Step 2: Convert to fraction form
    79,961.73/120,000.47 = 31,282.21/x
  3. Step 3: Cross multiply
    79,961.73x = 120,000.47 × 31,282.21
  4. Step 4: Simplify right side
    79,961.73x = 3,753,880,130.84
  5. Step 5: Solve for x
    x = 3,753,880,130.84/79,961.73
  6. Step 6: Final answer
    x = 46,945.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.